Gas valves



Oct. 14, 1958 c. cfLAMAR ETAL i 2,855,954

GAS VALVES Original Filed April 24,` 1952 1 2 Sheets-Sheet 1 Get., 4,1958 c. c. LAMAR 'ETAL l 2,855f954 l GAS VALVES Original Filed April 24,1952 2 Sheets-Sheet 2 Full 0h J0. l @rr'rTove nl @@faz' Unite GAS VALVES24, 1952. rli`his application August 11, 1954, Serial No. 449,043

7 Claims. (Cl. IS7-599.2)

The present invention relates to gas valves, and particularly toso-called double gas valves, i. e., valves used with gas burners eachhaving two burner sections and wherein the double valve controls thesupply of gas to both sections. Burners of this type are Called doubleburners and one of the burner sections is generally called the mainburner and the other the simmer burner. The present application is acontinuation of our application Serial No. 284,036, filed April 24,1952, and now abandoned.

Certain features of the present invention are disclosed in the copendingapplications of Charles C. Lamar, Serial No. 277,219, now Patent No.2,770,253, and Charles C. Lamar et al., Serial No. 277,218, tiled March18, 1952, and now abandoned. The latter discloses a double gas valvewhich can be constructed simply even though it provides a considerablenumber of desirable operating characteristics and which can be madeeconomically because of its small size. The present invention isdirected particularly to a new and improved double valve of thecharacter disclosed in the Lamar et al. application but which isconstructed and arranged so that it can be readily used with or adaptedfor use with different types of gas.

In double valves of the character towhich the present invention isdirected, the valves are operable into a plu- -Iality of operativepositions. These positions include a full on position wherein gas issupplied at a maximumv rate to both the main and simmer burner sections,a full simmer only position wherein gas is supplied at a maximum rate tothe simmer burner only, and a low simmer position wherein apredetermined low quantity of gas is supplied to the simmer burner only,in addition to an olf position. The valves are constructed and arrangedalso to provide what are called turn-down ranges wherein controllablequantities of gas can be supplied to both the burner sections or to thesimmer burner section only.

The gas valves maybe utilized with various types of gas so that it isimportant, in order to get proper operation, that the valve be eitherconstructed for the particular gas with which it is to be used or thatit be adjustable so that it can be used with many types of gas.Accordingly, one embodiment of the valve of the present invention isconstructed and arranged to provide the necessary adjustability and thevalve of another embodiment is so constructed and arranged that it canreadily be modified during final stages of construction to t it for theparticular gas with which it is to be used.

In brief, the valve of the present invention includes a valve bodyhaving a tapered valve plug receiving chamber and a gas inlet passagewayand a main burner outlet passageway angularly spaced from the inletpassageway and which may be coplanar with the latter and both of whichcommunicate with the chamber. also what may be called a full simmeroutlet passageway angularly spaced from the other passageways and whichis axially spaced toward the smaller end of the chamber from at leastthe inlet passageway. The inlet The body hasv States Patent withdiiferent types of gas.

passageway may be angularly substantially intermediate the main andsimmer outlet passageways where they communicate with the chamber. Theinlet is in a generally vertical plane while the outlet passageways aregenerally horizontal and spaced about in opposite directions from theinlet passageway. The outlet passageways also have axially extendingportions located at opposite sides of the chamber. Within the valvechamber is mounted a rotatable tapered valve plug having an axialpassageway and transverse passageway deiining means aligned with theinlet passageway and both the main and simmer burner outlet passagewaysin a full on position of the Valve and aligned with the inlet an-dsimmer burner outlet passageways in a full simmer position. The valveand body include also other passageway dening means providing what mightbe called a low simmer and carry-over passageway including owrestricting means for predetermining the ow of gas in the low simmerposition and also in a so-called carry-over range wherein the valve isoperated to change over from the supply of gas to both burner sectionsto the supply of gas to the simmer burner section only. This otherpassageway includes a passageway in the valve body opening to the valvechamber in a region spaced from the other passageways in the valve bodytoward the larger diameter end of the chamber and communicating with thesimmer burner outlet passageway and the axial passageway in the plug.The ow restricting means is embodied in the rotatable valve element insuch manner that it is accessible for adjustment from the exterior ofthe valve as through a hollow portion of a valve operating stem wherebythe valve can readily be adjusted for use In an alternative arrangement,the ilow restricting means is of a non-adjustable type, but of acharacter enabling it to be placed in the valve body as during a finalstage of construction of the valve when the particular type of gas to beused is known. Furthermore, to simplify construction the low simmer andcarryover passageway is so yconstructed and arranged that itinterconnects the gas inlet passageway with the low Lsimmer burneroutlet passageway only in the desired operating regions, although itcould do so continuously.

Other objects and advantages of the present invention will becomeapparent from the ensuing description of illustrative embodimentsthereof, in the course of which reference is had to the accompanyingdrawings, in which:

Fig. 1 is a full scale top plan view of a valve constructed inaccordance with the invention;

Fig. 2 is a full scale side elevational view of the valve;

Fig. 3 is a full scale end view looking at the valve from the stem end;

Fig. 4 is an enlarged top plan view partly in axial section and with thevalve in its full on position;

Fig. 5 is a plan view of the valve plug;

Fig. 6 is a conical layout of the plug chamber and plug with the valvein its full o-n position;

Figs. 7, 8 and 9 are views similar to Fig. 6 illustrating the valve inits full simmer, low simmer, and off positions;

Fig. l0 is a view similarrto the preceding views illustrating the valvein the carry-over range; and

Fig. 11 is a View similar to Fig. 4 of another embodiment of theinvention in which the ow restricting means for predeterminingthe flowin the carry-over and low simmer positions is located in the valve body.

Referring now to the drawings, and first to Figs. l-5, inclusive, thedouble gas valve of the present invention is indicated as a whole byreference character 30. It comprises a valve body 32 having a plugreceiving chamber 34 with a conical inner surface 36 Within which ismounted a movable control member illustrated as a rotatable tapered orconical valverplug 38.

Gas is supplied to the valve from any suitable source such as a gasmanifold 40 (see Fig. 4). The valve body is provided with an inletpassageway 1 formed within an externally threaded boss 42 utilized insecuring the valve to the manifold. The inlet is radial relative to thelongitudinal axis of the valve plug and chamber. The body is alsoprovided with radial outlet passageway portions 2 and 3 located in agenerally horizontal plane and spaced about 90 in opposite angulardirections from the inlet passageway and through which gas is suppliedto the main and 'simmer burners, respectively. Passageway 2cornmunicates with an axially extending main burner outlet passageway 44formed in lthe valve body and terminating in an externally threaded boss46 to which is secured an adjustable hood 48 which predetermines themaximum quantity of gas supplied to the main burner section of thedouble burner, not shown, in the full on position of the valve.Passageway 3 communicates with a generally axially extending simmeroutlet passageway portion S in the valve body which in turn communicateswith a simmer burner outlet passageway 52 formed in an externallythreaded boss 54 at the end of which s mounted an adjustable hood 56which predetermines the maximum quantity of gas supplied to the simmerburner section (not shown) in both the full on and full simmerpositions. All of the passageways mentioned can be readily formed as bydrilling the valve body. The passageways 2 and 3 can be drilled from theoutside of the valve body after which the outer ends can be readilyclosed asby the cupshaped plugs 58. These passageways and the passageway1 can also be drilled at the same time as the hereinafter referred topassageways 11, 12 and 13 in the valve plug.

The valve plug of the illustrative embodiment of the invention isprovided with an axially extending passageway and with four radialpassageways 11, 12, 13 and 14, of which, as best illustrated in Fig. 4,the passageways 11, l2 and 13 are aligned with the passageways 1, 2 and3 in the valve body in the full on position of the valve plug. Thesimmer outlet passageways 3, 13 and 14 are axially spaced toward thesmaller end of the chamber and plug from the inlet passageway 1 so thatthere can be no registry of any of this set with the inlet passageway.Also, passageway 14 registers with the passageway 3 in the full simmerposition, in which position passageway 12 in the plug registers with theinlet passageway 1 in the body, as will be described in greater detailhereinafter. The axial passageway 10 in the valve plug is connected tothe inlet passageway 1 in the operative positions of the valve.Accordingly, gas is supplied to the axial passageway at line pressureand throttling occurs at the outlets. As illustrated, passageways 1 and11 are of the same size, e. g., about .204 inch in diameter, whereaspassageways 2 and 12 are somewhat smaller, e. g., 193 inch in diameter,as are passageways 3 and 13, which may have `a diameter of about .125inch, so that, as shown, the simmer gas fiow is turned down prior to themain in the double turndown range. Passageway 14 may be somewhat smallerthan passageways 3 and 13, as of about .093 inch. The plug may have aconventional taper of two inches per foot, but is otherwise comparablein size to a single valve plug and has a length of 1%@ inch, a diameterof .361 inch at its smaller end and of about .450 inch at the plane ofthe inlet passageway.

In accordance with one of the features of the present invention, thevalve is constructed and arranged in such manner that the valve can beutilized with different types of gases requiring different sizedorifices in the low simmer and carryover positions. enabling the supplyof gas to the simmer burner outlet passageway to be regulated oradjusted through a hollow portion of the valve operating stem, the stembeing indicated by the reference character 60 and the hollow by thereference character 62. An auxiliary adjustable valve 64 -is mounted asat the juncture of the hollowA 62 and the axial passageway 10 and thusat the larger end of the This is accomplished by means valve plug. Thisvalve controls the tiow of gas from the axial passageway 10 to thesimmer burner outlet passageway, the arrangement of passageways in theplug and body being such that the axial passageway is effectivelyconnected to the simmer burner outlet passageway both in the low simmerposition of the valve and at the low end of the turn-down to bothsections where a changeover is made from the supply of gas to bothburner outlet passageways to a supply of gas to the simmer burner outletpassageway only.

The low simmer passageway system includes a second radial passageway 5in the valve body generally parallel to 'the passageway 3 andcommunicating with a generally axially extending passageway 6 forming ineffect an extension of passageway 50. The passageway 5 opens to thetapered portion of the valve plug and is axially spaced from thepassageways 1 and 11 so that there is no possibility of registry betweenthem. In order to interconnect passageway 5 with the axial passageway 10through the auxiliary valve 64, the valve plug is provided withpassageway defining means taking the form of a pair of lspaced apartgenerally transversely exending passageways 15 and 16 adapedto registerwith the passageway 5 in the low simmer and carry-over positions, seeFigs. 8 and l0. The passageways 15 and 16 are coplanar and so spacedaxially toward the larger end of the plug from. passageways other than 5in the body that they are effectively sealed from them in any plugposition. The passageways 15 and 16 communicate with an annular groove66 formed at the exterior of one of the two relatively rotatable partsof the auxiliary valve, specifically in the fixed part 68, within whichthe rotatable part 70 is mounted. The part 68 is tubular in formationand is adapted to be press 'fitted into the axial passageway 10. It hasa thin walled extension 72 rotatably securing the rotatable element 70to the tubular portion. The rotatable element has an enlarged head 74engageable as by a screw driver through the hollow 62 of the stem. Thefixed and rotatable parts have orifices 76 and 78 that are movablerelative to each other to vary the effective size of theoritice andlthus the quantity of gas supplied therethrough to the simmer burnersection. The orifice 76 leads to the annular groove 66 while the orifice78 is connectedv to the axial passageway v10 in the valve plug throughan axial passageway 80 in the rotatable element 70 ofthe auxiliaryvalve.

The variouspositions of the valve may be indicated to vthe user indesired manner by position indicating and determining means. The meansillustrated herein will fnot be described in detail but it is of acharacter dis closed and claimed in the copending application of PhilipS. Harper, Serial No. 162,446, led May l7, i950. The means includes afull on and off position determining 'and indicating washer 82 having aradial projection 83 engaging a first shoulder 84 `on the valve body inthe off position and another shoulder 86 in the full on position. Thewasher 82 encircles the valve stem 6l) and rotates 4with it. It isbiased against a housing 88 by a spring 90 (see Fig. 4) which alsomaintains the valve plug seated. Additional intermediate positionindicating mechanism is located within the housing 88. The housingconsists ofl acup-shaped element 92 and an end cap 94 through which thevalve stem projects. The housing is held in assembled relation relativeto the valve body by the securing screws 96. Within the housing islocated a washer 98, also rotating with the valve stem, and a springelement cooperating with the washer for position indication.

The valve is operable into a plurality of positions indicatedparticularly in Figs. 6-10, inclusive. These positions are a fullon'position, a full simmer position, a'low simmer position, and an offposition, together with a carry-over range that is illustrated in Fig.10. In these figures the positions of the valve plug relative to thebody are indicated by the arrow 102 and the angle readings. The valveconstruction is also such that turndown ranges are provided in whichregulatable quantities of gas are supplied to both the main and simmerburner sections and to the simmer burner section only.

In the full on position indicated in Fig. 6, maximum quantities of gasare supplied to both the main and simmer burners. In this position theinlet passageway 1 is in full registry with passageway 11 so that gas issupplied to the axial passageway and thence through passageways 12 and13 and the main and simmer burner outlet passageways 2, 44 and 3, 50 tothe main and simmer burners, respectively. 1

When the valve is turned in one direction from its full on position tothe full simmer position a decreased and regulatable quantity of gas issupplied in what is called a turn-down range, to the two burnerSections, the throttling taking place at the outlet passageways ratherthan at the inlet. The arrangement is also such that the simmerpassageways 3 and 13 are out of registry before passages 2 and 12, thusyinsuring turn-down of the simmer to a predetermined minimum or lowturn-down, prior to the termination of the supply of gasto the mainburner.

In the transition from the supply of gas to both sections to the supplyof gas to the simmer burner only, the maintenance of ame at the simmerburner is insured by supplying a predetermined minimum quantity of gasto the simmer burner section. The transition, or carryover as it may becalled, occurs at the low end of the yturn-down of gas to both burnersections, as illustrated in Fig. 10 from which it will be noted that theinlet passageway communicates with the axial passageway throughpassageways 11 and 12, and that the axial passageway communicates withthe main burner outlet passageway 2 through passageway 12 and with thesimmer burner outlet passageway 52 through the auxiliary valve 64 andthe passageway 16 in the valve plug and the passageways 5, 6 and 51B inthe Valve body. 1n this position passageway 3 is closed and passageway 2is almost closed at the plug surface and the latter will be closed uponslight further movement. The location of passageway 16 is such that itbegan to register with `passageway 5 before passageways 3 and 13 werecompletely out of registry, so as to insure a continuous supply of gasto the simmer burner.

In the full simmer position illustrated in Fig. 7, the inlet passageway1 registers with passageway 12 in the valve plug, and the plugpassageway 14 registers with the passageway 3 so that a full supply ofgas is supplied to the simmer burner.

The low simmer position illustrated in Fig. 8 results from furthermovement of the valve plug in the same direction to a position wherepassageway 12 is in partial registry with the inlet passageway 1 andwherein the predetermined and adjustable minimum supply of gas issupplied to the simmer burner through the auxiliary valve 64 andpassageway 15 in registry with the body passageway 5 which leads to thesimmer burner outlet passageway 50 through passageway 6. Passageway 15in the plug is so located that it begins to register with passageway 5before passageways 3 and 14 are out of registry, again to insure acontinuous supply of gas to the simmer burner.

ln this low simmer position the supply of gas is readily adjustablethrough the hollow of the valve stem so that the valve may be readilyused with diierent types of gases.

Further turning of the valve plug in the one direction results in agradual decrease of gas ilow to the simmer section until the valve plugreaches its olf position.

In operation of the valve from its 0E to full on position, the sequenceof operation is the reverse of that described above.

The present invention also lends itself to the use of different fixedorifice dening structures for use with different types of gas. A valveof this type is illustrated in Fig. 1l to which reference will now behad. The construction is very much the same as the one described here'-tofore except that a lixed orifice defining structure as in the form ofa cup-like insert with an oriiice 111 is placed lin the passagewayportion 6 leading to the simmer burner, the passageways 15 and 16 areradial, and the valve plug 112 has a solid stem 114. The valve plug is,however, provided with the axial passageway 1t) and the passageways 11,12, 13, 14, 15 and 16. The passageways 15 and 16 are axially spaced fromthe other passageways in the valve plug so that undesired gas flow isprevented.

From the foregoing detailed description of the present invention it maybe noted that valves embodying the features thereof are simple toconstruct and provide the desired operating conditions in a small,compact, and eicient structure.

While the invention has been described in connection with the details ofparticular embodiments thereof, it should be understood that thesedetails are not intended to be limitative of the invention exceptinsofar as set forth in the accompanying claims.

Having thus described our invention, what we claim 'as new and desire tobe secured by Letters Patent of the United States is:

l. A double gas valve for a double burner comprising main and simmerburner sections, including a valve body having a tapered valve plugreceiving chamber, a gas inlet passageway leading to said chamber, mainand simmer burner gas outlet passageways leading from said chamber, atapered valve plug mounted in `said chamber having a rst passagewayaligned with said inlet passageway and second and third passagewaysaligned with said main and simmer outlet passageways in a full onposition of the valve, said valve plug including also an axialpassageway communicating with the three mentioned passageways in theplug and including also a fourth transverse passageway in coplanarrelation with said third passageway in the plug and said simmer Iburneroutlet passageway, said inlet, main burner Outlet, and first and secondplug passageways being axially displaced from the coplanar passageways,the angular spacing of said passageways in the ,body and plug being suchthat the valve plug is operable in one direction from its full onposition through a Iturn-down range of both burner sections to a fullsimmer position wherein the fourth transverse passageway in the plug isin registry with the simmer burner outlet passageway and said secondpassageway in the plug is in registry with the inlet passageway and themain burner outlet passageway is closed at the bearing surface betweenthe plug and body, so that the plug is movable in said one directionfrom said full simmer position through'a turndown range of the simmersection only into a low simmer position wherein both the main and simmerburner outlet passageways are closed at the bearing surface between theplug and body, means including further passageway defining meansextending from said axial passageway to the surface of said plug at apoint spaced from the other passageways toward the larger end lof theplug and adjustable flow restricting means in -said passagewayaccessible from the exterior of the plug, and another passageway in saidbody connecting said simmer burner outlet passageway to said furtherpassageway defining means in the low simmer position, whereby anadjustable predetermined low quantity of gas is supplied to the simmerburner loutlet passageway only in the low simmer position, and said plugbeing movable further in said one direction to an off position whereinsaid inlet passageway is closed.

2. A double gas valve for a double burner comprising main and simmerburner sections, including a valve body having a chamber, a gas inletpassageway leading to said chamber, main and simmer burner gas outletpassageways leading from said chamber, a valve plug mounted in saidchamber having a first passageway aligned with said inlet passageway andsecond and third passageways aligned with said main and simmer outletpassageways in a full assises l,

on position of the valve, said valve plug including also'an axialpassageway communicating with the three mentioned passageways in theplug and including also a fourth transverse passageway in coplanarrelation with said third passageway in the plug and said simmer burneroutlet passageway, said inlet, main burner outlet, and first and secondplug passageways being in coplanar relation and axially displaced fromthe other coplanar passageways so that the'two coplanar sets ofpassageways do not register in any position of the plug, the angularspacing of said passageways in the body and plug being such that thevalve plug is movable in one direction from its full on position througha turn-down range of both burner sections to a full simmer positionwherein the fourth transverse passageway in the plug is in registry withthe simmer burner outlet passageway and said second passageway -in theplug is in registry with the inlet passageway and the main burner outletpassageway is closed at the bearing surface between the plug and body,means including a pair of coplanar further transversepassageways in saidplug leading from said axial passageway to the surface of the plug atpoints axially and angularly spaced from the other passageways andangularly from each other and a further passageway in said body adaptedto connect said further plug passageways to the simmer burner outletpassageway, a single gas flow restricting orifice for limiting the flowof gas through both of said further passageways, said furtherpassageways being so located that the plug is movable into a low simmerposition wherein gas is supplied to the simmer burner outlet passagewayonly through one of said pair of further passageways in said plug andthe one in the body and the gas ow restricting means, the location alsobeing such that gas is supplied to the simmer burner outlet passagewaythrough the other of said pair of further passageways in said plug andthe one in the body during movement of the plug in changing over fromthe supply of gas to both outlet passageways to the supply of gas to thesimmer burner outlet passageway only.

3. A double gas valve as claimed in claim 2 wherein said gas flowrestricting means is adjustable and mounted inthe valve plug between theaxial passageway and both said further transverse passageways in theplug, and the plug has a hollow stem open to said restricting means andthrough which the latter is adjustable.

.4. A double gas valve as claimed in claim '2, wherein said gas flowrestricting means is in the further passageway in the valve body.

5. A double gas valve for a double burner comprising main and simmerburner sections, including a valve body having a tapered chamber, agenerally vertical gas inlet passageway leading to said chamber, a mainburner outlet passageway having an axially extending portion on one sideof said chamber and a transverse portion leading lto said chamber at apoint angularly spaced from said inlet passageway, and a simmer outletpassageway including interconnected first and secondtransverseportonsleading to said chamber, the first portion beingaxially spaced toward the small end of :said tapered chamber and thesecond toward the large end of the chamber from said inlet passageway,all said outlet passageways being in a substantially common axiallyextending plane and said main and simmer outlet passageway transverseportions opening into said chamber at angularly opposite sides of vsaidchamber and the inlet passageway being angularly substantiallyintermediate them, a tapered rotatable valve plug in said chambercontrolling the connections between said inlet and outlet passageways,said plug having an axial passageway and a plurality of transversepassageways leading from said axial passageway to the exterior of theplug and certain of which connect the inlet passageway to the axialpassageway'in the operative positions of the plug so that gas issupplied to the axial passageway substantially at line pressure andthrottling in the turn-down ranges occurs at the outlets from the plug,certain of said transverse passageways communicating with said inlet,main outlet passageway and first transverse simmer outlet passagewayportion, respectively, in a full on position of the plug, said plugbeing movable in 4one direction from :said full on position through aturn-down range of both burner sections to a full simmer `position inwhich certain of said transverse passageways and a further Ypassagewayin said plug connect said inlet passageway to said first transversesimmer outlet passageway portion, said further transverse passagewaybeing aligned with saidy first transverse simmer Outlet passagewayportion in said full simmer position, said plug being movable further insaid one direction from said full simmer position through a turn-downlrange of the simmer burner section only to a low simmer position, andsaid plug including additional passageway defining means extending fromsaid axial passageway to the exterior of thc valve plug in the plane ofsaid second transverse portion of said simmer outlet passageway forsupplying gas to the simmer outlet passageway in said low simmerposition and in the turn-down range'between the full on and full simmerpositions, and flow restricting means arranged to restrict liow throughsaid second transverse portion of said simmer outlet passageway andadditional passageway defining means.

6. A double gas valve as claimed in claim 5 wherein said plug is movablefurther in said one direction from said low simmer position to an offposition.

7. A double gas valve as claimed in claim 5 wherein said ow restrictingmeans is located axially of the plug and discharges to an annularpassageway in the plug, and wherein said additional passageway definingmeans includes angularly spaced transverse passageways leading from thesurface ofthe plug to said annular passageway.

References Cited in the file of this patent UNITED STATES PATENTS2,120,864 Kagi June 14, 1938 2,286,766 Sherman June 16, 1942 2,299,624Harper u Oct. 20, 1942 FOREIGN PATENTS 15,663 Great Britain of 1906

